Spray gun



FIG. 1 is an upper perspective view of the spray gun showing my design.

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is an opposite side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a side elevation view thereof, showing an attachment in broken lines.

The broken lines are presented for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a spray gun, as shown and described. 